/**
* Generates the Related Links menu. Associated with the related_links
* shortcode.
* @param array The attributes passed by WordPress
* @return string The Related Links menu
*/
public function related_links_shortcode($atts = array())
{
self::$active_pages = array();
$menu_items = $this->init_shortcode($atts);
$display_menu_items = array();
$post_menu_items = array_filter($menu_items, function ($menu_item) {
// we need to use the current Post in here
global $post;
if ($menu_item->post_id == $post->ID) {
return true;
} else {
return false;
}
});
foreach ($post_menu_items as $menu_item) {
// get children items
$children = $this->get_menu_items_by_parent_id($menu_items, $menu_item->ID);
if (count($children)) {
// display children items
$display_menu_items = array_merge($display_menu_items, $children);
} else {
// else, display sibling items
$display_menu_items = array_merge($display_menu_items, $this->get_menu_items_by_parent_id($menu_items, $menu_item->parent_id));
}
}
if (empty($display_menu_items)) {
// we don't have anything to display yet, so display top-level items
$display_menu_items = $this->get_menu_items_by_parent_id($menu_items, 0);
}
// filters out duplicates
$display_menu_items = array_filter($display_menu_items, function ($display_menu_item) {
static $ids = array();
// always include custom pages - they ALL have a post_id of 0, which
// will break the below checks.
if ($display_menu_item->object == 'custom' && $display_menu_item->post_id == 0) {
return true;
}
if (in_array($display_menu_item->post_id, $ids)) {
return false;
} else {
$ids[] = $display_menu_item->post_id;
return true;
}
});
$args = (object) shortcode_atts(array('theme_location' => '', 'before' => '', 'after' => '', 'link_before' => '', 'link_after' => ''), $atts, 'related_links');
return $this->generate_menu_html('related-links-' . $args->theme_location, $display_menu_items, -1, $args);
}
